What kind of pressurised container can i use to move a car not more than 3m and hw can i pressurise it?

Question

the container must not use any source of energy like batteries.the car must stop on its own within 3m and not less than 2.5m

Answer 1

Ok, heres one for your teacher, "is a pressurized container, not, an"energy source" in itself?

BAMMMMMM.

Then, ask if he can spot ya for a "hydraulic ram", they aint cheap.The stopping parts easy, just put a brick 2.75m ahead of the start point, in the path of the car, of course.

Answer 2

If you can back the car up against a wall, you can use a surplus weather balloon as the pressurized container and a vacuum cleaner as the air source (you will need a vacuum like a Kirby or Electrolux where you can get at the outflow air and connect it directly to the balloon nozzle).  A big weather balloon can have a diameter of well over 3 meters and will provide a huge surface area so that a few psi of pressure in the balloon corresponds to a huge amount of thrust delivered over the area of the car rear end.  Furthermore, the balloon will inflate slowly so the car won't get going very fast and stop when you turn off the vacuum cleaner.

Answer 3

this is a silly project.  Do you actually have to do this?  

Some kind of piston driven by compressed air. But a container of compressed air is a energy source. In fact, the requirements don't make sense, as you need energy to move the car, but you can't use energy.

Put a barrier up 2.8 meters in front of the car.